Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D363240 | Surveying apparatus utilizing a laser beam | Takumi Hirakawa, Hiroyuki Tsuchikane, Yuichi Ohashi, Shigeyuki Sawaguchi | 1995-10-17 |
| D335822 | Satellite location measuring receiver | Yutaka Nakamura, Shigeyuki Sawaguchi | 1993-05-25 |